Home / 43,153.84-64,728.60-11,989.36

Finding the Fourth Proportional to 43,153.84, 64,728.60 and 11,989.36

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Solution

The fourth proportional to 43,153.84, 64,728.60 and 11,989.36 is: 17,983.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,153.84 : 64,728.60 = 11,989.36 : x
  2. Step 2: Convert to fraction form
    43,153.84/64,728.60 = 11,989.36/x
  3. Step 3: Cross multiply
    43,153.84x = 64,728.60 × 11,989.36
  4. Step 4: Simplify right side
    43,153.84x = 776,054,487.70
  5. Step 5: Solve for x
    x = 776,054,487.70/43,153.84
  6. Step 6: Final answer
    x = 17,983.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.